As Petr Hluzín wrote: > It *sometimes* works because simulavr code does not initialize the > bytes in ALU registers (actually objects of RAM class).
Just like in the real CPU. CPU registers and RAM contents are random, only IO registers get well-defined state after a reset or power-on. If someone is ambitious, every bit could be tracked whether it is still in "X" state when being examined. ISTR VMLAB does it that way: http://www.amctools.com/ Also, the usual HDL simulations track "X" bits. -- cheers, Joerg .-.-. --... ...-- -.. . DL8DTL http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-) _______________________________________________ Simulavr-devel mailing list Simulavr-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/simulavr-devel
